Given:
[tex]2x-y=4[/tex]
Substituting the points one by one in the equation.
Substitute (1,2) in the given equation
[tex]\begin{gathered} 2(1)-2=4 \\ 2-2=4 \\ 0\ne4 \end{gathered}[/tex]
Substitute (2,0) in the given equation
[tex]\begin{gathered} 2(2)-0=4 \\ 4=4 \end{gathered}[/tex]
Substitute (0,4) in the given equation
[tex]\begin{gathered} 2(0)-4=4 \\ -4\ne4 \end{gathered}[/tex]
Substitute (1,-2) in the given equation
[tex]\begin{gathered} 2(1)-(-2)=4 \\ 2+2=4 \\ 4=4 \end{gathered}[/tex][tex]Points\text{ (2,0) and (1,-2) are the solution points to the given equation.}[/tex]
